Oil burner



Aug. 23, 1938- c. J. T. McPHEsoN OIL BURNER Filed May 24, 1937 750mg? m@ INVENTOR E? gw Z 217.2,

ATTORNEYS Patented Aug. 23,1938

` UNITED *STATES PATENT 'OFFICE 3 Claims.

This invention relates to oil burners, and its general object is to provide an oil burner that is primarily designed for cabinet heaters but can be used with utmost efficiency in stoves of other types, as well as'furnaces, and is capable of pro, ducing intense heat with minimum consumption of fuel, due to complete combustion that is brought about by the structure and arrangement of the parts, which provides' for. the proper mixing of the fuel and air, thereby resulting in the formation of a gaseous mixture of extremely high combustible qualities.

A further object is -to provide an oil burner that is practically noiseless, is simple in construction, inexpensive vto manufacture and extremely efilcient in use and service.

This invention also consists in certainother features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claims.

l In describing the invention in detail, reference will be had to the accompanying drawing wherein g5 like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a vertical sectional view illustrating my oil burner in use with a cabinet heater.

Figure 2 is a sectional view taken approximately x on line 2--2 of Figure l, looking in the direction of the arrows.

Referring to the drawing in detail, the reference numeral I indicates the casing or shell of a cabinet heater which is provided with an open bottom having a flange extending about the same to which is 'secured the legs 2, and the upper end of the casing is closed by the usual slotted or open Work top 3, while the front of the casing has an opening therein closed by a door 4.

a) The oil burner includes a casing 5 that. is likewise provided with an open bottom having a supporting frame preferably made from bars 6 bridgJ ing the same, as clearly shown in Figure 1, the

bars having upturned ears fixed to the inner side of the casing 5. The casing provides a combustion chamber and the upper end thereof is closed as at 1.

Mounted on the supporting frame .or bars 8 is the fire pot of my burner which as shown in Figure 1 is of ring formation and includes inner to the flange II of the inner wall by screws or other suitable means is a ring plate I3, while a like ring plate I4 is secured to the flange I2 of the outer wall, the plates extending toward each other and thence are upwardly flared to provide 5 a restricted flame outlet. The walls 8 and 9 are each provided with perforations I5 for the passage of air within the`fire pot as shown by the arrows in Figure 1.

Secured to and supported upon the plate I3 10 is a substantially drum shaped closed casing I6 that has its bottom shaped to follow the shape of the plate I3 and the casing I6 provides what I term a name deector. The upper end of the casing I6 is closed by a flat wall I1, and resting 16 thereon and extending rearwardly for disposal through the casings I and 5 is a flue pipe I8 which has inlet openings I9 in the sides thereof, while the inner end of the pipe I8 is closed as at 28.

Disposed within the drum shaped casing I6 and 20 radiating from the center thereof are horizontal tubes 2l which have their inner ends communieating and their lopposite ends opening through the wall of the drum or casing I6. The tubes 2l are arranged adjacent the lower end of the drum 25 I6 and formed with the meeting inner ends thereof for communication therewith as well as rising' therefrom is what I term a hot blast tube 22 which extends through the upper wall of the drum I6 as well as through the flue pipe I8 and 30 has secured to the upper end thereof a funnel shaped inlet member 23 which opens through the upper wall 'I of the combustion chamber provided by the casing 1. The passage of air within the tube 22 is controlled by valve means which in- 35 cludes a slotted disk 24 in the form as shown that is fixed in the upper end of the inlet member 23, and a -like slotted disk 25 is rotatably mounted 0n the disk 24 so that the slots can be disposed into and out of registration with respect to each 40 y other. The disk 25 is preferably adjusted by a lever 26 that has its inner end pivotally secured thereto adjacent its periphery and the lever extends through an opening in the front wall of the casing or shell I, with a knob 2l fixed to the 45 outer end thereof to provide a handle,vas will be apparent, and the lever preferably has teats 28 depending therefrom to provide means for holding the valve in adjusted positions, the teats cooperating for disposal upon opposite sides vof 50 the opening,y as shown.

The oil is introduced in the lower end of the fire pot bybranch pipes 29 extending from the main pipe that is in communication with a suitable source of supply and the branch pipes pass through the inner Wall 8 and terminate substantially midway between the walls 8 and 9, as shown in Figure 1, so that the oil will be equally distributed around the bottom of the pot.

It will be obvious that the oil is'ignited within the pot, and air passing through the openings I5 as shown by the arrows, will become heated by the flaming oil which will result in the formation of gas that burns upwardly through the annular flame passage provided by the rings i3 and I4, where it is mixed with additional air within the combustion chamber, that iiows through the'tubes 2| and 22, as indicated by the arrows, thereby providing intense heat within the combustion chamber and about the iiame deflector, the heat `rising to be radiated through the openings or slots in the top 2 of the casing of the burner.

However, the heat can be regulated by increasing or decreasing the amount of air that passes through the blast tube 22 and tubes 2| by the Valve means at the upper end of the blast tube, as set forth.

It will be noted that the central air passage provided by the wall 8 of the fire pot is closed by the bottom of the casing I6, and I may provide a at ring shaped partition 30 which is shown as extending outwardly from the upper end of the outer wall 9 of the fire pot,- to the Wall of the casing 5, for closing the air passage about the wall 9 of the pot, so that all the air coming through the lower end of the casing 5 will pass through the perforations l5 for disposal within the pot, to provide a draft therethrough. However, the partition which in effect, acts as a deflector, may be disposed at any place, desired.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is:

1. An oil burner comprising a. casing providing a combustion chamber having an open lower air inlet end, an oil receiving ire pot mounted within the casing at the lower end thereof and including perforated coiicentrically arranged vertical walls providing a central air passage through the pot and an air passage about the pot, means extending inwardly from the upper ends of the Walls to provide a restricted flame outlet for the pot, a hollow drum shaped closed ilame deilector seated on the pot and closing the upper end of the central air passage, tubular means extending through the flame deiiector for introducing air in the path of the ame from the outlet, means for regulating the passage of air through` the tubular means, and flue means providing the outlet for the combustion chamber and having lat- 5 eral inlet openings therein and a closed inner end.

2. An oil burner comprising a casing providing a combustion chamber having an open lower air inlet end, a ring shaped oil receiving re pot 10 mounted within the casing at the lower end thereof and including perforated concentrically arranged vertical Walls providing a central air passage through the pot and an annular air passage about the pot, ring plates secured to the upper 15 ends of the walls and being upwardly iiared therefrom and spaced to provide an annular flame outlet, a 'closed hollow llame deilector seated on the ring plate and closing the upper end of the central air passage, a blast tube extending centrally through the ilame deector, horizontal tubes communicating with the lower end of the blast tube and radiating therefrom and opening above the flame outlet for introducing air in the path of :llame therefrom, flue means providing the outlet of the combustion chamber and resting on the flame deiiector, said blast tube extending through the iiue means, and means at the upper end of the f blast tube for regulating the passage of air therethrough. I .-.30

3. An oil burner comprising a casing providing a combustion chamber having an open lower air inlet end, a ring shaped oil receiving re pot mounted Within the casing at the lower end thereof and including perforated concentrically aar-,35 ranged outer and inner vertical walls, the inner wall providing a central air passage through the pot and the outer wall spaced from the casing wall to provide an annular air passage about the i pot, said pot having a restricted flame outlet ath-40 the upper end thereof, a flame deflector seated on and rising from the pot and closing the upper end of the central air passage, said ilame deflector including rounded portions extending into the path of iiame from the outlet of the pot, a blast. tube extending centrally into the flame deilector, air tubes communicating with the blast tube and radiating therefrom for introducing air in the path of the flame from the pot outlet, flue means resting upon the flame deflector and providing; 50 the outlet for the combustion chamber, valve means for controlling passage of air through the blast tube, and handled lever means for actuating the valve means.

CHARLES J. T. McPHERsoN. 

